<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<table>
    <tr>
        <th>姓名</th>
        <th>年龄</th>
    </tr>
    <tr>
        <td>张三</td>
        <td>19</td>
    </tr>
    <tr>
        <td>小花</td>
        <td>16</td>
    </tr>
</table>
<style>
    table,th,td{
        border: 1px solid black;
    }
    table{
        border-collapse: collapse;
        width:100%
    }
    th{
        height: 50px;
        background-color: green;
        color:white;
    }
    td{
        height: 50px;
        vertical-align: bottom;
        padding: 50px;
    }
</style>
</body>
</html>
